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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CSS3+jQuery仿花瓣网固定顶部位置悬浮的导航菜单丨芯晴网页特效丨CsrCode.CN</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<style type="text/css">
body,h1,ul{margin:0;}
ul li{list-style-type:none;}
#header{100%;border-top:solid 1px #ccc;border-bottom:solid 1px #ccc;text-align:center;}
h1{padding:10px 0;color:#D74452;}
.nav{1000px;background:#fff;margin:20px auto 0;border:solid 1px #ccc;zoom:1;border-radius:5px;box-shadow:0 1px 6px rgba(0,0,0,0.1);color:#D74452;}
.nav_scroll{position:fixed;100%;margin:0;left:0;top:0;}
.nav:after{content:"";display:block;height:0;clear:both;visibility:hidden;}
.nav ul li{float:left;margin:0 20px;height:30px;line-height:30px;}
.nav ul li a{cursor:pointer;}
.nav ul li a:hover{text-decoration:underline;}
h2{height:400px;line-height:400px;}
</style>
<script src="/imagesforcode/jquery-1.7.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function(){
var topMain=$("#header").height()+20//是头部的高度加头部与nav导航之间的距离
var nav=$(".nav");
$(window).scroll(function(){
if ($(window).scrollTop()>topMain){//如果滚动条顶部的距离大于topMain则就nav导航就添加类.nav_scroll，否则就移除
nav.addClass("nav_scroll");
}else{
nav.removeClass("nav_scroll");
}
});
})
</script>
</head>
<body>
<div id="header"><h1>花瓣</h1></div>
<div class="nav">
<ul>
<li><a>关注</a></li>
<li><a>最新</a></li>
<li><a>最热</a></li>
<li><a>视频</a></li>
<li><a>家居</a></li>
<li><a>旅行</a></li>
</ul>
</div>
<div style="background:#f9f9f9;color:#000;" id="cont">
<br><br><br><br><br>如果不显示预览效果，请刷新一下本页面先~~<br>所需js文件：<a href="/imagesforcode/jquery-1.7.2.min.js">jquery-1.7.2.min.js</a><br><br><font color=black>▲ 目前IE8及以前版本不兼容CSS3，请使用IE9/火狐/Chrome浏览器运行本效果。<br><hr><p align="center">本特效由 <a href="http://tianmsc.diandian.com/" target="_blank">芯晴网页特效</a>丨CsrCode.Cn 收集于互联网，只为兴趣与学习交流，不作商业用途。来源：源码爱好者</p></font>
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</div>
</body>
</html>